Recommendations pls!

Hi please can u recommend me some kdramas what has a male lead what acts like someone else just finished fall in love with me and healer and I want something similar? Thank you in advance!!

ji chang wook ( the main actor in healer ) also acted another drama same story somehow the name of the drama is k2 

if you liked healer I bet you like kill me heal me too.

https://mydramalist.com/3993-ghost-2012

https://mydramalist.com/6669-dont-look-back-the-legend-of-orpheus

https://mydramalist.com/13388-mask

If you're looking for a drama where the male lead was in disguised/living with a different identity then:

Cruel City

Black

Terius behind me